OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-f3af13-0): addr:5a:66:12:97:76:3d
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:2e:1f:95:66:77:2f
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
